Agilent Manuals

This document introduces the HPLC method of analyzing antioxidants and UV stabilizers.

This document analyzes the properties and characteristics of Polymethylmethacrylate (PMMA), as well as its applications in the production of safety glasses, Plexiglas, and glasses for optics, cars, and dishes. The molecular weight of the polymer ranges from 120000 to 180000 g/mol. Evaluating the molecular weight ensures product quality.

This paper describes the method of analyzing polybutadiene using gel permeation chromatography

Polystyrene is a polymer widely used in the production of cabinets, housings, furniture, packing boxes, and food packaging material. It has a high molecular weight and can be used as homo- and co-polymers, thermoplastic elastomers, and foamed polystyrene (EPS). Gel Permeation Chromatography (GPC) is used to evaluate the molecular weight of each batch of produced polymer to ensure the highest quality.

This document describes the analysis method for PVC using gel permeation chromatography (GPC).

This document describes a technique for analyzing epoxy resins. Epoxy resins are high-molecular-weight materials used to manufacture oil- and fuel-resistant plastics. The technique uses gel permeation chromatography to analyze epoxy resins. The technique can measure the molecular weight of epoxy resins, which is important for ensuring the quality of epoxy resins.

This document describes a method for analyzing Sudan red in diesel oil using high-performance liquid chromatography (HPLC). The method can be used to identify and quantify Sudan red by measuring its absorption spectrum.

This application note describes the method for analyzing brenzcatechine (TBC) additive in styrene using Agilent HPLC.

A method using gas chromatography-thermal conductivity detection (GC/TCD) with an HP-PLOT Q capillary column for the analysis of a natural gas sample is described. Over 70 sequential runs showed good separation for a wide variety of analytes with good method reproducibility.

Retention time locking (RTL) can be used to lock retention times with chromatographic instruments, columns, and different types of detectors, which increases laboratory productivity.

This document introduces an improved method for analyzing aromatics in gasoline using Agilent's 6890/5973 GC/MSD system and ChemStation software. The system and software provide a number of enhancements that can be used to validate compliance with government regulations and improve productivity.

This document describes an optimized method for the analysis of sulfur and nitrogen compounds in gasoline- and diesel range materials. The analysis is performed using an Agilent 6890 gas chromatograph (GC) configured with an Agilent G2350A atomic emission detection (AED) system. A 30-m × 0.32-mm, 1-mmmmm HP-1 MS capillary column is used for separation. The method is applicable to low-sulfur gasoline and diesel fuels. Nitrogen compounds can also be determined. The method can be applied to other light gas oil fractions with final boiling points of approximately C25 (402 ºC, 756 ºF). The configuration meets the requirements for determining sulfur in gasoline by ASTM method D 5623. The procedure can be extended to also measure oxygenates, organolead, organomanganese, and fluorine compounds in gasoline and diesel fractions.

This document introduces a new product (Application 460B-00) from Agilent Technologies/Wasson-ECE, which uses a 5973N GC/MSD (gas chromatograph/mass selective detector) to determine trace levels of impurities in ethylene and propylene. The product shows comparable performance in terms of linearity and repeatability compared to GC/FID or GC/TCD. The sensitivity of GC/MSD is increased 50-fold compared to GC/FID, and 5000-fold compared to GC/TCD.

This paper describes the method of analyzing sulfur anions in Kraft liquors using capillary electrophoresis in the chemical recovery process at a Kraft pulp mill. Sulfur anions, such as sulfate in the black liquor, are converted to sulfide anions in the green liquor. Sulfide anions in the pulping reactions produce stronger paper, but if their concentration is too low, the paper loses its strength, and if the concentration is very high, polluting emissions from the Kraft recovery furnaces are increased. Wet chemical tests and Ion Chromatography (IC) have traditionally been used to analyze process liquors. However, capillary electrophoresis is a suitable replacement for IC due to its benefits of less buffer consumption, less maintenance, and considerably shorter run times.

Measuring intraday and interday precision of GPC-SEC analysis data